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4 years ago

How do answer an equation that have decimals/ percentage

2 answers:

5 0

Do the same thing like
0.2x+0.2=4
0.2x=4-0.2
0.2x=3.8
x=3.8/.2
x=19

For percent,
What is 8% of 54
8%=0.08
0.08 * 54
4.32 is the answer

Like that. I hope this is what you are looking for. I'm sorry if it isn't

bazaltina [42]4 years ago

3 0

If you had an equation such as 50%x=20, I would convert the percent to a decimal first. So, 0.50x=20. Then I would change the decimal into a simplified fraction. In this case it is 1/2. So, 1/2x=20. Then I would reciprocate the fraction and multiply that by 20. So x=20*2/1. From this, we would get x=40/1, but the 1 is not necessary, so we can write the final answer as x=40.

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Use the equation v = StartFraction 10 Over p EndFraction to determine the pressure when the volume is 10 liters. A. 10 c. 100 b.

Galina-37 [17]

The value of the pressure is 1 when the value of volume is 10 liters, the correct option is D.

<h3>What is the pressure?</h3>

Pressure is defined as the physical force exerted on an object.

The force applied is perpendicular to the surface of objects per unit area.

Given

The equation is

$\rm V=\dfrac{10}{p}$

Where the v is the volume and p is the pressure.

The value of p when the value of volume v is 10 liters is;

$\rm V=\dfrac{10}{p}\\\\\rm 10=\dfrac{10}{p}\\\\P = \dfrac{10}{10}\\\\P=1$

Hence, the value of the pressure is 1.

To know more abour pressure click the link given below.

brainly.com/question/17799294

6 0

2 years ago

Miguelle is deciding which type of heating system to put in his house. An oil system costs $2700 to install and

stellarik [79]

Answer: (9, 10800)

Step-by-step explanation:

We will first let x be the number of years and y be the total cost.

In that case, let's plug in the values for each into the equation y=mx+b, where m is the slope and b is the y-intercept.

The y-intercept will be the value we start with before any years pass, so it will be the installation cost. The slope is how fast the total cost will increase. Since the operation costs have to be added on every year, it will be our slope.

With that in mind, let's create both of our equations:

y = 900x + 2700 (Oil system)
y = 200x + 9000 (Solar system)

Since y is solved for in the first equation, we can substitute it into the second equation:

$900x + 2700 = 200x + 9000$

$700x + 2700 = 9000$ [Subtracting 200x from both sides]

$700x = 6300$ [Subtracting 2700 from both sides]

$x = 9$ [Dividing both sides by 700]

We can now substitute 9 for x in any equation and solve for y. Here I substituted it into the first one:

$y = 900(9) + 2700$

$y = 8100 + 2700$ [Multiplying]

$y = 10800$ [Adding]

Hence, the solution to this linear system is (9, 10800).

3 0

2 years ago

Which is the most accurate way to estimate 49% of 49

Svetlanka [38]

Answer:

49% of 49 is 24.01

Step-by-step explanation:

3 0

4 years ago

-2(2-2x)-4(x-5) is less than or equal to -24

Sphinxa [80]

Your answer to your question is that it is less than -24

4 0

3 years ago

Please help this needs to be done today I'll give brainliest if you're correct

Lapatulllka [165]

Answer:

Simile and personification, explanations below!

Step-by-step explanation:

"Like the straw in her pink lemonade" = simile

A simile compares two things using like or as. In this case, the story compares the bending of the microphone to bending the straw in lemonade.

"Her voice an impostor" = personification

Personification describes a object with human-like qualities or characteristics. In this case, a voice can't actually be an impostor as it is not a living person.

6 0

2 years ago